/* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.activiti.engine.impl.bpmn.behavior;
import org.activiti.engine.ActivitiException;
import org.activiti.engine.DynamicBpmnConstants;
import org.activiti.engine.delegate.BpmnError;
import org.activiti.engine.impl.bpmn.helper.ErrorPropagation;
import org.activiti.engine.impl.context.Context;
import org.activiti.engine.impl.pvm.delegate.ActivityExecution;
import org.activiti.engine.impl.scripting.ScriptingEngines;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.exception.ExceptionUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.fasterxml.jackson.databind.node.ObjectNode;
/**
* activity implementation of the BPMN 2.0 script task.
*
* @author Joram Barrez
* @author Christian Stettler
* @author Falko Menge
*/
public class ScriptTaskActivityBehavior extends TaskActivityBehavior {
private static final long serialVersionUID = 1L;
private static final Logger LOGGER = LoggerFactory.getLogger(ScriptTaskActivityBehavior.class);
protected String scriptTaskId;
protected String script;
protected String language;
protected String resultVariable;
protected boolean storeScriptVariables = false; // https://activiti.atlassian.net/browse/ACT-1626
public ScriptTaskActivityBehavior(String script, String language, String resultVariable) {
this.script = script;
this.language = language;
this.resultVariable = resultVariable;
}
public ScriptTaskActivityBehavior(String scriptTaskId, String script, String language, String resultVariable, boolean storeScriptVariables) {
this(script, language, resultVariable);
this.scriptTaskId = scriptTaskId;
this.storeScriptVariables = storeScriptVariables;
}
public void execute(ActivityExecution execution) throws Exception {
ScriptingEngines scriptingEngines = Context
.getProcessEngineConfiguration()
.getScriptingEngines();
if (Context.getProcessEngineConfiguration().isEnableProcessDefinitionInfoCache()) {
ObjectNode taskElementProperties = Context.getBpmnOverrideElementProperties(scriptTaskId, execution.getProcessDefinitionId());
if (taskElementProperties != null && taskElementProperties.has(DynamicBpmnConstants.SCRIPT_TASK_SCRIPT)) {
String overrideScript = taskElementProperties.get(DynamicBpmnConstants.SCRIPT_TASK_SCRIPT).asText();
if (StringUtils.isNotEmpty(overrideScript) && overrideScript.equals(script) == false) {
script = overrideScript;
}
}
}
boolean noErrors = true;
try {
Object result = scriptingEngines.evaluate(script, language, execution, storeScriptVariables);
if (resultVariable != null) {
execution.setVariable(resultVariable, result);
}
} catch (ActivitiException e) {
LOGGER.warn("Exception while executing " + execution.getActivity().getId() + " : " + e.getMessage());
noErrors = false;
Throwable rootCause = ExceptionUtils.getRootCause(e);
if (rootCause instanceof BpmnError) {
ErrorPropagation.propagateError((BpmnError) rootCause, execution);
} else {
throw e;
}
}
if (noErrors) {
leave(execution);
}
}
}